Josephine Chen, FNP, RN

Josephine Chen practices at John Muir Physician Network in Walnut Creek, California.

Josephine Chen's NPI, 1790175214, was assigned on February 4, 2015. Josephine Chen holds California license 95001968.

Josephine Chen's primary practice is John Muir Physician Network, at 2621 Shadelands Dr, Walnut Creek, CA 94598 in Contra Costa County. The practice phone is (925) 296-9872.

Josephine Chen's primary practice is John Muir Physician Network in Walnut Creek, California. Josephine Chen is also affiliated with John Muir Medical Center, Walnut Creek. The medical group on file is John Muir Medical Group. Dmand AI also links Josephine Chen to 2 more medical groups and 1 group practice or clinic, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Josephine Chen practices, 2 sites in all. Vendor and product names are available with a free account.

Family is Josephine Chen's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Josephine Chen is licensed in California.

Dmand AI lists anxiety, chronic diabetes, chronic obstructive pulmonary disease (COPD), conjunctivitis, contact dermatitis, diabetic emergency, fluid and electrolyte imbalances and gastroenteritis among the conditions Josephine Chen treats.

CMS data shows 686 Medicare services from Josephine Chen across 11 procedure codes in 2024, for 313 Medicare patients. Medicare paid $52,433 for them. Every service was in an office.

CMS counts 313 Medicare patients who saw Josephine Chen in 2024. The largest group is 75 to 84, with 119 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 17% are also on Medicaid. Their average risk score is 1.12, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Josephine Chen's median patient age at 48, with 70% women.

In 2024, Josephine Chen wrote 2,283 Medicare Part D claims for 415 patients. 86% of them were for generic drugs. CMS names the drug for 1,705 of them, across 58 drugs with 11 or more claims each, at $172,809 in total drug cost.

Josephine Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Dmand AI links 4 papers to Josephine Chen, published from 2017 to 2019. Josephine Chen's most frequent co-authors are Sue Sun Yom, MD, PhD, Jason Wing-Hong Chan, MD and Alexander Lin, MD.

CMS Open Payments shows 19 general payments to Josephine Chen from 11 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Corcept Therapeutics paid the most, $241.